摘要
本文以空调用抗性消音器为研究对象,分别从消声性能(消声量与消声频率)、再生噪音(气流冲击消音器结构产生的噪音)和压力损失(消音器出入口的压力差)的角度进行分析。研究表明:插入管消音器低频消声带宽是普通扩张室消音器的2倍,穿孔管消音器不能解决扩张室消音器低频消声频带窄的问题;当介质流速小于15 m/s时,对消声性能影响可忽略;相同介质流速10 m/s下,与无插入管扩张室消音器相比,插入管消音器的再生噪音和压力损失分别降低了18%和33%;综合消声性能、再生噪音和压力损失3方面因素,插入管消音器结构最优。
Taking muffler of air conditioning as a research object,the muffler performance(amount of muffler and frequency),regenerative noise(generated by airflow impacting the structure of the muffler),and pressure loss(pressure difference between the muffler inlet and outlet)are analyzed in this paper.The results show that,the low frequency band of the insert tube muffler is twice than that of the expansion room muffler.But the perforated tube muffler can’t solve the problem of low frequency muffler band.The effect on character of muffler can be ignored when the medium velocity is less than 15 m/s.At the same media medium velocity of 10 m/s,the regeneration noise and pressure loss of the pipe muffler are reduced by 18%and 33%,respectively.Synthesizing three factors of acoustic attenuation performance,regeneration noise and pressure loss,insert tube muffler is the best structure.
作者
夏增强
吴俊鸿
高智强
XIA Zengqiang;WU Junhong;GAO Zhiqiang(Gree Electric Appliances,Inc.of Zhuhai Co.,Ltd.,Zhuhai,Guangdong 519070,China)
出处
《制冷技术》
2019年第6期70-74,共5页
Chinese Journal of Refrigeration Technology
关键词
介质流速
消声性能
再生噪音
压力损失
Medium velocity
Noise reduction Performance
Regeneration noise
Pressure loss
